This document provides an overview of the US presidency, including selection, qualifications, succession, and powers of the president. It discusses the formal and informal roles of the president, such as commander-in-chief, chief diplomat, party leader, and head of the executive branch. The document also examines the growth of the executive office over time through organizations like the Executive Office of the President. Presidential character and leadership styles are analyzed using Barber's model of active-positive, active-negative, passive-positive and passive-negative typologies.